From the documentation it looks like a component can only take a custom controller or extension.

We are using OrchestraCMS so we need to use their custom controller for the page. But I want to create a component that will fit in the page that includes a contact form that will submit to leads. Pretty straight forward. I don't need to do any addtional processing to the fields aside from some js stuff, so I think the standard leads controller would suffice.

The question is can I use the standard leads controller or do I have to create my own custom controller?

thanks.